Insulator.



C. DISBENNET.

INSULATOR.

APPLICATION FILED MAY8.1917.

Patented Mar. 19, 1918.

UNITED STATES PATENT FFTCE,

CHARLES DISBENNET, GF LOGAN, OHIQ.

INSULA'OR.

Application filed May S, 1917.

To all 107mm t 'may concern:

Be it knownthat I, CHARLES Dlsnnnn'r, a citizen of the United States,residing at Logan, in the county of Hocking and State of Chio, haveinvented certain useful lmprovements in lnsulators, of which thefollowing is a specification, reference being had therein to theaccompanying drawing.

The invention relates to an insulator, and more particularly to theclass of wire retaining devices for insulators.

The primary object of the invention is the provision of a device of thischaracter wherein'an electric current wire can be securely fastened inthe insulator and said wire can be readily removed when the occasionrequires, the device being adaptable for use with various styles ofinsulators employed on cross arms or brackets for eX- terior electricwiring or on insulator knobs or cleats for interior construction ofelectric wiring.

Another object of the invention is the provision of a wire retainingdevice wherein the lemployment of nails, screws or other like fastenersis eliminated and the wire can be securely clamped in the insulator forholding said wire in place and is designed for use in supportingtelephone or telegraph wires for the distribution of electric current.

A further object of the invention is the provision of a wire retainingdevice of this character which is simple in construction, thoroughlyreliable and eliicient in use, strong, durable, and inexpensive ofmanufacture.

Other objects will be in part obvious and in part hereinafter set forth.

The invention accordingly consists in the features of construction,combination of elements and arrangement of parts which will be'exemplified in the construction hereinafter described, and the scope ofthe application of which will be indicated in the appended claims.

In the accompanying drawing:

Figure 1 is a vertical sectional view of an insulator, showing the wireretaining device in side elevation constructed in accordance with theinvention applied:

Fig. 2 is a top plan view thereof;

Fig. 3 is a side elevation of the retaining cylinder' of the device Fig.l is a perspective view of said retaining cylinder;

Fig. 5 is a side elevation of the bushing for the retaining cylindersupporting block.

Specification of Letters Patent.

Serial No. 16T/,249.

Similar reference characters indicate corresponding parte` throughoutthe several views of the drawing.

Referring to the drawing in detail, designates generally an insulatorbody which is formed with a circular socket or recess 10 opening throughthe top thereof, while formed in the insulator body A at diametricallyopposite points in the wall of the recess 10 therein are wire receivinggroove-s 1l in which is adapted to be engaged an electric wire or wires,while mounted within the recess 10 is the wire retaining devicehereinafter fully described.

The wire retaining device comprises a block 12 preferably nade fromporcelain, although the saine may bc made from any othel suitableinsulating material and is formed in sections, the block being retainedin the recess through the `medium of a securing bolt 13 which engages inthe insulator body A as shown in Fig. 1 of the drawing,

rlhe block 12 is preferably of rectangular shape and is former with awire receiving groove le which opens through the top of said block, andthis groove is of curvilinear shape, with a flared or enlarged outeropen end, the grooves 11 in the insulator body being correspondinglyshaped to the groove l-l in the block 12, and the electric wires areadapted to be engaged in said grooves and retained therein in a mannerpresently described.

Formed medially of the block 12 is a seat 15 for receiving a rotary wireretaining cylinder 16 which, at the periphery thereof and centrally7 ofthe saine, is formed. with a rib 17 which engages in a channel 18 formedin the block 12, and this rib 17 engaging in said channel preventslateral play of the cylinder 1G when rotated within the block. Thecylinder 1G at one side is formed with a. longitudinally disposed notch19 which opens through opposite ends of the cylinder and through theperiphery thereof, the

'notch 19 being designed to receive the electric winJ or wires therein,and on the rotation of the cylinder 16 in one direction the said wireswill be brought into a posit-ion at the closed end of the grooves 11 and11i in the insulator body A and block 12 therein for the retaining ofthe wire andthe fastening of the same in the insulator.

Mounted within the channel 18 is a bushing 2O which receives the ribs 17and prevents any st-rain upon the block 12, thereby avoiding` theracturing of the block in the working of' the wire retaining device.

ln the c ylinder 16 diametrically opposite the notch 19 is notch 21which is longii dinally disposed and opens through the op posit-e endsand periphery ot said cylinder, and spanning this notch are normallyoutwardly bowed expanding webs 23 which, on the application of a toolsuch as pliers thereto, and the bending of the same in parallel relationto each other, will distort the cylinder to bind the same within theseat l5 therefor in the block 12 so as to prevent the working ol thecylinder 16 outwardly from said seat.

Forni-:fd on and projecting laterally 'lfrom opposite sides ot' thecylinder 1G atV the 3eri'lgiliery thereof are arms 23 formed with ri ghtangular legs or levers 21twhich are disposed beyond opposite sides ofthe block 12, while :formed on opposite side faces of he latter are camswells 25 with which engage legs or levers Qd when the cylinder 1G hasbeen rotated in one'direction for the bringing of the electric, wires tothe inner ends of the grooves 11 and lll, and in this manner thecylinder is held fast in position for retaining the wires in saidgrooves. Thus it will be seen that the electric wires are retainedwithin the insulator A and held tast by the retaining cylinder 1G whichis locked in its retaining position when the legs or levers let on thearms Q3 ride on to the swells Q5 at opposite sides ot the block 1Q-within the insulator.

lt is of course to be understood that thc wire retaining` de Tice can bemounted on or in various styles of insulators and ditferent sizes ot'electric wires can be retained thereby for the fastening of the same inplace. On reversing the rotation of the retaining cylinder 16 the wirescan be readily removed or detached from the insulator, as will beobvious.

From the foregoing description, taken in connection with theaccompanying drawing, the construction and operation of the herein.described insulator will be readily apparent and, therefore, a moreextended explanation has been omitted.

Having thus described my invention, I claim:

1. A Wire retaining device comprising a member' having a wire receivinggroove therein, a wire retaining cylinder rotatably mounted within saidmember and having a notch for receiving a wire for delivering the sameto the inner end ol2 the wire receiving groove in the member on therotation of said cylinder in one direction, and means on the cylinderand member for locking said cylinder against accidental rotation in thereverse direction.

wire retaining device comprising a having a wire receiving groovetherein, a wire retaining cylinder rotatably mounted within said memberand having a notch for receiving a wire for delivering the same to theinner end of the wire receiving groove in the member on the rotation otsaid cylinder in one direction, means on the' cylinder and member forlocking said cylinder against accidental rotation in the reversedirection, and a guide rib on the cylinder and engaged in the member.

2l. ri, w1 e receiving device comprising a member lim-.fing a wirereceiving groove thei a wire retaining cylinder rotatably morn d withinsaid member and having a notch tor receiving a wire for delivering thesame to the inner end ot the wire receiving groove in the member on therotation of said cylinder in one direction, means on the cylinder andmember for locking said cylinder against accidental rotation in thereverse direction, a guide rib on the cylinder and engaged in themember, and a bushing Vfor said guide rib.

-l. A wire retaining device comprising a member having a wire receivinggroove therein, a wire retaining cylinder rotatably mounted within said1 Aeinber and having a notch tor receiving a wire for delivering thesame to the inner end oi the wire receiving groove in the member on therotation of said cylinder in one direction, cam swells on opposite sidesoft tl ne n ember, and arms on said cylinder and having levers for'lfrictionally engaging with the cam swells to lock the cylinder inretaii'iing position tor holding the wire at the inner end of thegroove.

A, wire retaining device comprising a member having a wire receivinggroove therein, a wire retaining cylinder rotatably mounted within saidmember and having a notch for receiving a wire for delivering the sa tothe inner end of the wire receiving groove in the member on the rotationot said cylinder in one direction, cam swells on opposite sides of themember, arms on said cylinder and having levers for rictionally engagingwith the cam swells to lock the cylinder in retaining position forholding the wire at the inner end of the groove` and expanding means insaid cylinder and adapted to distort the same within the member toprevent the withdrawal thereof from the latter.

1n testimony whereof I atliX my signature.

CHARLES DISBENNET.

Gopiel of this patent may be obtained for five cents each, by addressingthe Commissioner ot Patents,

Washington, D. C.

